login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A053566 as a simple table

n a(n)
0 -2
1 -1
2 12
3 81
4 378
5 1539
6 5832
7 21141
8 74358
9 255879
10 866052
11 2893401
12 9565938
13 31355019
14 102036672
15 330024861
16 1061819118
17 3400690959
18 10847773692
19 34480423521
20 109252577898
21 345191655699

[-2,-1,12,81,378,1539,5832,21141,74358,255879,
 866052,2893401,9565938,31355019,102036672,
 330024861,1061819118,3400690959,10847773692,
 34480423521,109252577898,345191655699]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 15 13:27 EDT 2020. Contains 336504 sequences. (Running on oeis4.)